Brake-applying means



July 28, 1931. H. PERROT BRAKE APPLYING MEANS Filed Aug. 12, 1927 IIII A 7 INVENTOR ENRI PERROT w ATTORNEY Patented July 28, 1931 UNITED STATES PATENT. OFFICE HENRI PERROT, OF PARIS, FRANCE, ASSIGNOR, BY MESNE ASSIGNMENTS, TO BENDIX AVIATION GORPQRATION, F-NEW YORK, N. Y., A CORPORATION OF DELAWARE BRAKE-APPLYING MEANS Application filed August 12, 1927. Serial No. 212,601, and in France November 10, 1928.

This invention relates to' brakes, and is illustrated as embodied in novel applying means which may be used with an internal expanding automobile brake. An object of the invention is to provide a simple applying device, preferably provided with thrust rollers to minimize friction, and which can shift to equalize the pressures on the brake shoes or their equivalents.

In one desirable arrangement there is a brake-applying shaft, shown with a crank arm to the end of which is pivoted one end of a floating lever carrying the thrust rollers. I prefer to make the lever of a pair of stampings or the like, between which the rollers are mounted. n

The above and other objects and features of the invention, including various novel and desirable structural details,will be apparent from the following description of the illustrative embodiments shown in the accompanying drawing, in which:

Figure 1 is a schematic .view of a brake,- showing-the arrangement of. the applying device with respect tothe shoes or equivalent friction means;

Figures 2, 3, 4, and 5 are views of various modifications of the applying means, shown in elevation;

Figure 6 is a view of the novel and floating lever, with rollers, of the modification of Figure 2;

Figure 7 is an end elevation of the crank arm and shaft for operating the lever of No. 1,567,716, granted Bendix Brake Company on December 29, 1925, on an .applica-' tion ofA. Y. Dodge. 3

The applying device, as shown in Figures 1, 2, and 68, includes a brake-applying shaft 12 (which may have an operating lever indicated by the line 14 in Figure 1), provided at its end with a crank arm 16 having Figure 6; and Figure 8 is a section on the line 8-8 of pin 18 offset from the axis of :inner end ofa floating lever 26 intermediately pivoted at 28 on the end of one shoe and having at its outer end a thrust roller 30 engaging the end of the other shoe.

In Figure 4, the roller 24 engages the innerend of a lever 32 pivoted at its outer end at 34 to one shoe and having an intermediate thrust roller 36 engaging the other shoe.

' In Figure 5 the arrangement'of Figure 2 is turned upside down.

While several illustrative embodiments have been described in detail, it is not my intention to limit the. scope of the invention to those'particular embodiments, or otherwise than by the terms of the appended claims. I

I'claim:

1. Applying'means engageable with. the friction means of a brake, comprising, in combinatioma shaft, a pair of spaced members engaged by the shaft and forming a brake-app ying lever operated by the shaft, and a pair of thrust rollers pivotally mount: ed between said members.

2. Applying means'engageable with the friction means of a brake, comprising, in combination, a shaft having a crank arm, a pair of spaced members engaged at their ends bfy the endof the crank arm and forming a oating brake-applying lever operated by the shaft, and a pair of thrust rollers pivotally mounted between said members.

3. Applying means engageable with the friction means, of a brake, comprising, in combination, a shaft, a pair of spaced members engaged by the shaftand forming a brake-applying lever operated by the shaft, and a thrust roller mounted between said members. I

4.Applying' means engageable with the friction means jot-a. brake, comprising, in combination, a shaft having 'a, crank arm,'a.

pair of spaced" membersfengaged. at their ends b the end of the crankarm and form 5 ing a; eating brake-applying lever operated by the shaft, and a thrust roller mounted between saidmembers'.

In testimony whereof, I have hereunto si ed m name.

gn H. PERROT. 

